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An excess of aqueous AgNO3 reacts with 41 mL of 5 M K2CrO4(aq) to form a precipitate. What mass of the percipitate is formed
An organofluorine compound has a density of 0.773 g/L at 18.5 C and 223 mm Hg pressure. calculate the molar mass of the compound
C3H8 + 5O2 reacts to yield 3CO2 + 4H2O +488 kJ What is the heat released if 2.5 moles of C3H8 reacts completely with oxygen?
A diatomic gas does 315 J of work and also absorbs 580 cal of heat. What is the change in internal energy of the gas?
Electromagnetic radiation with a wavelength of 665 nm appears as orange light to the human eye. The energy of one photon of this light
5.00g of Mg was reacted completely with Cl2 to form MgCl2 and 63.0kJ of heat was evolved. what is the molar enthalpy of formation of MgCl2?
When a glow stick is placed in a freezer, its chemiluminescence lasts a significant time longer. How might this come about?
what adjustment should be made to the mobile phase to bring the compound off sooner? why?
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
calculate the gasphase proton affinity of NH3. The lattice energy of NH4Cl may be estimated from Kapustinskii's formula using rN-Cl = 3.50 Å.
Calculate the density. Copper (II) ion radius of 0.96A and the sulfide ion has a radius of 1.84A. Calculate the % of the cube occupied by the copper(II) sulfide.
The Ksp of cadmium hydroxide, Cd(OH)2, is 7.20 × 10-15. Calculate the molar solubility of this compound.
Calculate Delta H kJ/mol NH4NO3 for the solution process. NH4NO3 ( s) yields NH4 (there is a plus sign above the four)(aq) + ^ + NO3(negative sign above the three) (aq)
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